Misfire cylinder four

Tiny
SHERMAN SIMMONS
  • MEMBER
  • 2008 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 190 MILES
25 psi in cylinder, engine running rough and gas smell.
Friday, October 2nd, 2020 AT 5:51 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

This reading indicates you may have either burned valves or bad rings.

https://www.2carpros.com/articles/the-reasons-for-low-compression

https://www.2carpros.com/articles/replace-engine-piston-rings

The heads will have to removed to determine the failure.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Roy
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Friday, October 2nd, 2020 AT 9:36 AM

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